<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>map方法</title>
</head>
<body>

</body>
<script>
  const arr1 = ['1', '2', '3']
  const arr2 = [{name: 'xiaoxiong'}, {name: 'xiaotuzi'}]
  const r = arr1.map((x) => {
    parseInt(x)
  })
  arr2.map(item => {
    return item.name = 'xiaokonglong'
  })

  console.log(arr2)

</script>
</html>
